take one of these
http://www.fasttech.com/products/0/...50-emergency-mobile-power-rechargeable-batter
and one of these
http://www.fasttech.com/products/0/10004592/1353300-variable-voltage-usb-passthrough-battery-for-e
now bung in some 18650's and you have more batery vape time than you can handle.
http://www.fasttech.com/products/0/...50-emergency-mobile-power-rechargeable-batter
and one of these
http://www.fasttech.com/products/0/10004592/1353300-variable-voltage-usb-passthrough-battery-for-e
now bung in some 18650's and you have more batery vape time than you can handle.